Kaigarayama Shell Mound
Kiyosu, Japan
The Kaigarayama shell midden (Kaigarayama kaizuka) is an archaeological site containing the ruins of a large-scale Yayoi period settlement with an associated shell midden located in what is now part of the city of Kiyosu, Aichi in the Tōkai region of Japan. The shell midden was designated a National Historic Site of Japan in 1971.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).